Revision history [back]

Solution to my problem :

//define your mask image
    cv::Mat mask22 = cv::Mat::zeros(imv.size(), imv.type());        
    mask22 = cv::Scalar(255, 255, 255);
    //Define your destination image
    cv::Mat dstImage = cv::Mat::ones(imv.size(), imv.type());

    rectangle(mask22, bounding_rect, cv::Scalar(0, 0, 0), -1);
    imshow("msk", mask22);
    //Now you can copy your source image to destination image with masking
    imv.copyTo(dstImage, mask22);
    imshow("fond en cours", dstImage);